Saw-set.



W. L. HAMPTON.

SAW SET. APPLICATION FILED AUG. 16, 1911.

1,029,991 Patented June 18,1912.

ZD l I WZI flaw 01017, 2X @0020 I 212 1 7 44 GJZMZZQ & Brion 121g tll ll WILLIAM L. HAMPTON, OF STOWE, PENNSYLVANIA.

SAW-SET.

Specification of Letters Patent.

Patented June 18, 1912.

Application filed August 16, 1911. Serial No. 644,284.

To all whom it may concern:

Be it known that I, l/VILLIAM L. I'IAMP TON, a citizen of the United States, residing at Stowe, in the county of Montgomery and State of Pennsylvania, have invented certain new and useful Improvements in Saw- Sets, of which the following is a specification.

My invention relates to improvements in saw sets, and has for its leading object the provision of an improved device which will serve to automatically impart the correct bend or set to the teeth of a saw and will serve to bend adjacent teeth in opposite directions.

The further object of my invention is the provision of an improved form of supporting block for rotating saw setting cylinders by the use of which diiferent cylinders may be employed and may be set in desired adjusted position with respect to each other according to the size of the teeth of the saw or the thickness of the blade of the saw.

Other objects and advantages of my improved saw set will be readily apparent by reference to the following description taken in connection with the accompanying drawings, and it will be understood that I may make any modifications in the specific structure shown and described within the scope of my claim without departing from or eX- ceeding the spirit of my invention.

Figure 1 represents a side elevation of my improved saw setting tool. Fig. 2 represents a top plan view thereof. Fig. 3 represents a cross-sectional view on the line 33 of Fig. 2. Fig. 4 represents a sectional view on the line 44 of Fig. 2.

In the drawings, in which similar characters of reference are employed to denote corresponding parts in the several views, the

numeral 1 designates the base block or plate of my device having at its sides the depending flanges 2 adapted to rest on a suitable support. Said flanges have formed therethrough the vertical passages 3 to receive the screws 4 for securing the tool upon a work table or other firm and stationary support. Said plate 1 has formed at one end and extending inward thereinto the recess 5, While the portion of the flanges at the sides of the said recess have formed therein the under-cut grooves 6. Fitting into the said grooves 6 are the beveled edges 7 of the slide plate 8 which is of size to just fill the recess and lie flush with the upper face of the plate 1. To retain the slide plate within the recess of the main plate, I secure to the ends of the flanges of the main plate the cap plate 9 which extends flush with the upper surface of the plate 1. The recess is sufficiently long to allow of slight sliding movement of the slide plate, and the slide plate has formed therein at its inner end the socket 10 into which fits one end of the spring 11 having its other end fitting into the socket 12 formed in the plate 1 at the end of the recess. Said spring thus tends to force the slide plate outward in the recess, while to hold the plate 8 inward against the expansive force of the spring, I engage in the cap plate 9 the adjusting screw 13 having a milled head 14 for turning the same and having its inner end bearing against the end of the slide plate as is clearly illustrated in the drawings. Inasmuch as these parts are identical in both forms of my invention I have applied the same reference characters to said parts in both the preferred and modified construction.

In the preferred form of my invention, I form in the plate 1 a vertical bearing pas- .sage to receive the post 14 having a collar portion 15 resting on the upper face of the plate and having its lower end depending through the plate. Mounted upon the lower end of the post 14 is the spur gear 16 secured against rotation on the post by the key or locking screw 17. A second post 18 depends through the slide plate 8 and has a collar 19 resting on the top of the slide plate 8, said post having secured on its lower end the spur gear 20 which is in mesh with the spur gear 16 of the other post. Said gears loosely mesh with each other and have the ends of their teeth slightly beveled, whereby the gears will remain in mesh and turn without sticking or distorting the teeth irrespective of the adjustment of the two posts relative to each other by adjustment of the slide plate. -The two posts have mounted thereon the cylindrical sleeves 21 having at their lower ends the inwardly inclined or beveled recesses 22 and the outwardly flaring teeth 23 which separate the recesses. Said sleeves are held in adjusted position upon the posts by set screws 24 and are arranged so that the teeth of one sleeve fit into the recesses of the other sleeve as the two sleeves rotate. In the use of this form of my invention, a saw is inserted between the two cylinders which serve' to engage the sides of the saw and guide the same, the teeth of the saw being disposed at the base of the cylinders whereby the teeth of the cylinders will engage and bend or set the saw teeth, as will be readily understood by reference to the drawings. To insure the teeth being correctly engaged by the teeth of the cylinders even when the saw blade is somewhat rocked and to prevent slight rocking of the saw blade from raising the saw teeth, I form in the plate 1 the outwardly and downwardly inclining grooves 25 extending from the casing of the spring receiving socket which is flush with the plate or sufliciently near the surface of the plate to form a satisfactory rest for the saw teeth. In use, it is merely necessary to either push or draw a saw blade be tween the cylinders when the gears will cause the cylinders to turn in unison and prevent relative slipping thereof, the teeth of the cylinders consequently serving to automatically set the saw teeth.

From the foregoing description taken in connection wit-h the accompanying drawings the construction and use of my saw setting tool will be readily apparent, and it will be seen that I have provided a simple and efiicient device of this character which will satisfactorily set the teeth of a saw and in which the position of the setting cylinders with respect to each may be readily adjusted according to the thickness of the saw and in which the cylinders may be easily removed and changed to enable me to employ cylinders having different sizes of teeth to correspond to the teeth of the particular saw which is to be set, and which device will consequently commend itself to all as extremely practical and efficient;

I claim:

The combination with a base plate having a recess formed therein, said plate hav: ing supporting side flanges formed with under cut grooves adjacent the recess, of a slide plate having beveled edges fitting in the grooves of the flanges, a spring for holding the slide plate outward in the recess, a cap plate secured to the ends of the flanges for retaining the slide plate in the recess, a set screw engaged in the cap plate for forcing the slide plate inward, a post rotatably supported by the slide plate, a second post rotatably mounted on the main plate, sleeves secured 011 the posts, both of said sleeves having interengaging teeth and beveled portions for bending and receiving saw teeth, and means for causing the posts and sleeves to rotate in unison.

In testimony whereof I aflix my signature, in the presence of two witnesses.

IVILLIAM L. HAMPTON.

IVitnesses I'IOWARD M. Kooii, H. ELLIS GI-IANDLEE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

